#include <bits/stdc++.h>
#define ios ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
#define file(s) if (fopen(s".in", "r")) freopen(s".in", "r", stdin), freopen(s".out", "w", stdout)
#define all(a) a.begin() , a.end()
#define F first
#define S second
using namespace std;
using ll = long long;
const int N = 2e5+5 , inf = 2e9 + 7;
const ll INF = 1e18 , mod = 1e9+7 , P = 6547;
vector<int> guess(int n) {
vector<int> a(n);
a[0] = ask(1);
map<int,int> ans;
for(int i = 0; (1 << i) <= n; i ++) {
vector<int> p;
for(int j = 2; j <= n; j ++) {
if(j & (1 << i)) {
p.push_back(j);
}
}
auto g1 = get_pairwise_xor(p);
p.push_back(1);
auto g2 = get_pairwise_xor(p);
map<int,int> mp;
for(auto to: g2) mp[to] ++;
for(auto to: g1) mp[to] --;
for(auto to: mp) {
if(to.S) {
ans[to.F^a[0]] |= (1 << i);
}
}
}
for(auto to: ans) {
a[to.S-1] = to.F;
}
return a;
}
Compilation message
Xoractive.cpp: In function 'std::vector<int> guess(int)':
Xoractive.cpp:17:9: error: 'ask' was not declared in this scope
17 | a[0] = ask(1);
| ^~~
Xoractive.cpp:26:13: error: 'get_pairwise_xor' was not declared in this scope
26 | auto g1 = get_pairwise_xor(p);
| ^~~~~~~~~~~~~~~~
